Pump injector



FIG. 1 is an upper front right side perspective view of a pump injector of the new design;

FIG. 2 is a top plan view of the pump injector of FIG. 1;

FIG. 3 is a bottom plan view of the pump injector of FIG. 1;

FIG. 4 is a front elevational view of the pump injector of FIG. 1;

FIG. 5 is a rear elevational view of the pump injector of FIG. 1, the right and left side elevational views each being a mirror image thereof; and,

FIG. 6 is a cross sectional view of the pump injector of FIG. 1, along the 6—6 line of FIG. 4. 

The ornamental design for a pump injector, as shown and described. 